Import wiredtiger: 8f5b5544d8e2ca861956a255cf079b3ad34ca0f3 from branch mongodb-3.8

ref: a6e72378a6..8f5b5544d8
for: 3.7.3

WT-1228       Improve performance of WT_SESSION::open_cursor
WT-3805       Avoid reading lookaside pages in truncate fast path
WT-3829       WiredTiger metadata can be logically inconsistent.
WT-3848       Enhance new prepare transaction API to enforce post conditions
WT-3850       Implement WT_SESSSION::prepare_transaction
WT-3867       Bi-weekly WT codebase lint
WT-3901       Corruption of operation tracking log files
WT-3904       Reconsider error path in log server thread
WT-3905       Save the timestamp used for a checkpoint
WT-3912       fast-delete pages should re-instantiate the delete transaction's timestamp.
WT-3923       __wt_txn_context_prepare_check() requires API initialization
WT-3925       Fix test format operation selection code
WT-3926       Allow read_timestamp to be set after begin_transaction
WT-3927       LSM truncate operations are too slow.
WT-3932       WiredTiger memory allocation failure in js_test
WT-3933       test/format failure illegal WT_REF.state rolling back deleted page

1 files changed, 2 insertions, 1 deletions

diff --git a/src/third_party/wiredtiger/tools/optrack/wt_optrack_decode.py b/src/third_party/wiredtiger/tools/optrack/wt_optrack_decode.py
index 380cab50eba..0837bc723dd 100755
--- a/src/third_party/wiredtiger/tools/optrack/wt_optrack_decode.py
+++ b/src/third_party/wiredtiger/tools/optrack/wt_optrack_decode.py
@@ -100,7 +100,8 @@ def funcIDtoName(funcID):
     if (functionMap.has_key(funcID)):
         return functionMap[funcID];
     else:
-        return "NULL";
+       print("Could not find the name for func " + str(funcID));
+       return "NULL";
 
 #
 # The format of the record is written down in src/include/optrack.h